A weighted core workout designed to build deep core strength, improve stability and leave you feeling stronger from the inside out. **Equipment:** 1 x 4kg dumbbell, or a weight that feels challenging for you. **Focus:** Core strength, deep abdominal activation, obliques, stability, posture and balance. **Cycle Stage / Energy:** Best suited to your higher energy weeks, follicular and ovulation. If you're in your lower energy weeks, simply reduce the weight, slow the tempo or complete the class without resistance if that feels better for your body. **Why this works:** Your core is so much more than your abdominal muscles. It acts as the body's natural support system, helping to stabilise your spine, improve posture and transfer strength throughout the entire body. Adding resistance increases the challenge, encouraging your deep core muscles to work harder whilst improving balance, coordination and functional strength that supports everyday movement.